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[PATCH] ipw2200: wireless extension sensitivity threshold support

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The patch allows the user to set the handover threshold, i.e. the number
of consecutively missed beacons that will trigger a roaming attempt. The
disassociation threshold is set to 3 times the handover threshold.

Signed-off-by: Olivier Hochreutiner <olivier.hochreutiner@epfl.ch>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Olivier Hochreutiner 2006-03-08 03:13:55 +08:00 committed by John W. Linville
parent 71de1f3dd1
commit 651be26f2d
3 changed files with 61 additions and 1 deletions
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10
Documentation/networking/README.ipw2200
View File

@ -30,6 +30,7 @@ Index
2. Ad-Hoc Networking
3. Interacting with Wireless Tools
3.1. iwconfig mode
3.2. iwconfig sens
4. About the Version Numbers
5. Firmware installation
6. Support
@ -383,6 +384,15 @@ When configuring the mode of the adapter, all run-time configured parameters
are reset to the value used when the module was loaded. This includes
channels, rates, ESSID, etc.
3.2 iwconfig sens
-----------------------------------------------
The 'iwconfig ethX sens XX' command will not set the signal sensitivity
threshold, as described in iwconfig documentation, but rather the number
of consecutive missed beacons that will trigger handover, i.e. roaming
to another access point. At the same time, it will set the disassociation
threshold to 3 times the given value.
4. About the Version Numbers
-----------------------------------------------

48
drivers/net/wireless/ipw2200.c
View File

@ -8608,6 +8608,52 @@ static int ipw_wx_get_nick(struct net_device *dev,
return 0;
}
static int ipw_wx_set_sens(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
struct ipw_priv *priv = ieee80211_priv(dev);
int err = 0;
IPW_DEBUG_WX("Setting roaming threshold to %d\n", wrqu->sens.value);
IPW_DEBUG_WX("Setting disassociate threshold to %d\n", 3*wrqu->sens.value);
mutex_lock(&priv->mutex);
if (wrqu->sens.fixed == 0)
{
priv->roaming_threshold = IPW_MB_ROAMING_THRESHOLD_DEFAULT;
priv->disassociate_threshold = IPW_MB_DISASSOCIATE_THRESHOLD_DEFAULT;
goto out;
}
if ((wrqu->sens.value > IPW_MB_ROAMING_THRESHOLD_MAX) ||
(wrqu->sens.value < IPW_MB_ROAMING_THRESHOLD_MIN)) {
err = -EINVAL;
goto out;
}
priv->roaming_threshold = wrqu->sens.value;
priv->disassociate_threshold = 3*wrqu->sens.value;
out:
mutex_unlock(&priv->mutex);
return err;
}
static int ipw_wx_get_sens(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
struct ipw_priv *priv = ieee80211_priv(dev);
mutex_lock(&priv->mutex);
wrqu->sens.fixed = 1;
wrqu->sens.value = priv->roaming_threshold;
mutex_unlock(&priv->mutex);
IPW_DEBUG_WX("GET roaming threshold -> %s %d \n",
wrqu->power.disabled ? "OFF" : "ON", wrqu->power.value);
return 0;
}
static int ipw_wx_set_rate(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
@ -9429,6 +9475,8 @@ static iw_handler ipw_wx_handlers[] = {
IW_IOCTL(SIOCGIWFREQ) = ipw_wx_get_freq,
IW_IOCTL(SIOCSIWMODE) = ipw_wx_set_mode,
IW_IOCTL(SIOCGIWMODE) = ipw_wx_get_mode,
IW_IOCTL(SIOCSIWSENS) = ipw_wx_set_sens,
IW_IOCTL(SIOCGIWSENS) = ipw_wx_get_sens,
IW_IOCTL(SIOCGIWRANGE) = ipw_wx_get_range,
IW_IOCTL(SIOCSIWAP) = ipw_wx_set_wap,
IW_IOCTL(SIOCGIWAP) = ipw_wx_get_wap,

4
drivers/net/wireless/ipw2200.h
View File

@ -246,8 +246,10 @@ enum connection_manager_assoc_states {
#define HOST_NOTIFICATION_S36_MEASUREMENT_REFUSED 31
#define HOST_NOTIFICATION_STATUS_BEACON_MISSING 1
#define IPW_MB_DISASSOCIATE_THRESHOLD_DEFAULT 24
#define IPW_MB_ROAMING_THRESHOLD_MIN 1
#define IPW_MB_ROAMING_THRESHOLD_DEFAULT 8
#define IPW_MB_ROAMING_THRESHOLD_MAX 30
#define IPW_MB_DISASSOCIATE_THRESHOLD_DEFAULT 3*IPW_MB_ROAMING_THRESHOLD_DEFAULT
#define IPW_REAL_RATE_RX_PACKET_THRESHOLD 300
#define MACADRR_BYTE_LEN 6